Silver halide photographic emulsions sensitized in the presence of organic disulfides and sulfinates

This invention provides a method of preparing a silver halide photographic emulsion which comprises adding to the silver halide emulsion after precipitation and before or during sensitization a disulfide compound and a sulfinate compound, wherein the disulfide compound and the sulfinate compound are...

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Bibliographische Detailangaben
Hauptverfasser: LEONARD, PATRICIA ANN, KLAUS, ROGER LEE
Format: Patent
Sprache:eng ; fre ; ger
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Beschreibung
Zusammenfassung:This invention provides a method of preparing a silver halide photographic emulsion which comprises adding to the silver halide emulsion after precipitation and before or during sensitization a disulfide compound and a sulfinate compound, wherein the disulfide compound and the sulfinate compound are added simultaneously. It further provides a silver halide photographic emulsion prepared by the above method.